Add initial TS implementation of update-required-checks.sh

Author: mbg

pr-checks/sync-checks.ts

@@ -0,0 +1,46 @@
+#!/usr/bin/env npx tsx
+
+/** Update the required checks based on the current branch. */
+
+import { parseArgs } from "node:util";
+
+import { OLDEST_SUPPORTED_MAJOR_VERSION } from "./config";
+
+async function main(): Promise<void> {
+  const { values: options } = parseArgs({
+    options: {
+      // The token to use to authenticate to the API.
+      token: {
+        type: "string",
+      },
+      // The git ref for which to retrieve the check runs.
+      ref: {
+        type: "string",
+      },
+      // By default, we perform a dry-run. Setting `apply` to `true` actually applies the changes.
+      apply: {
+        type: "boolean",
+        default: false,
+      },
+    },
+    strict: true,
+  });
+
+  if (options.token === undefined) {
+    throw new Error("Missing --token");
+  }
+  if (options.ref === undefined) {
+    throw new Error("Missing --ref");
+  }
+
+  console.info(
+    `Oldest supported major version is: ${OLDEST_SUPPORTED_MAJOR_VERSION}`,
+  );
+
+  process.exit(0);
+}
+
+// Only call `main` if this script was run directly.
+if (require.main === module) {
+  void main();
+}